CN105221094A - Horizontal well double-sealing single-clamp blowout prevention process - Google Patents
Horizontal well double-sealing single-clamp blowout prevention process Download PDFInfo
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- CN105221094A CN105221094A CN201510611736.7A CN201510611736A CN105221094A CN 105221094 A CN105221094 A CN 105221094A CN 201510611736 A CN201510611736 A CN 201510611736A CN 105221094 A CN105221094 A CN 105221094A
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- pressure
- packer
- blowout prevention
- centralizer
- guiding
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- 230000002265 prevention Effects 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000007789 sealing Methods 0.000 title abstract 2
- 239000004576 sand Substances 0.000 claims abstract description 19
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000005488 sandblasting Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The invention relates to the technical field of oil extraction engineering of oil fields, and belongs to a horizontal well double-sealing single-clamping blowout prevention process for oil fields. The invention effectively solves the problem of no blowout prevention in the oil pipe in the prior art, and can meet the environmental protection construction requirement of double-seal single-clamp fracturing of the horizontal well. Firstly, an anti-blowout valve 3, a safety joint 4, a centralizer 5, a hydraulic anchor 6, a K344 packer 7, the centralizer 5, a pressure-guiding sand blower 8, the K344 packer 7 and a guide plug 9 are sequentially arranged on an oil pipe 2 and are put into a casing 1; after the fracturing layer section is put into, injecting liquid, opening the blowout prevention valve 3, generating throttling pressure difference by the pressure-guiding sand blaster 9 to seat the K344 packer 7, and allowing fracturing fluid to enter the stratum through the pressure-guiding sand blaster 8; and after one interval is fractured, the well is washed in a reverse circulation mode, the blowout prevention valve 3 is closed, and the pipe column is lifted to the next interval. The invention has the advantages of safety, environmental protection, simple operation, high-efficiency construction and the like.
Description
Technical field
The present invention relates to oil extraction in oil field field of engineering technology, belong to a kind of horizontal well for oil field two envelope single deck tape-recorder Technics of Prevention of Well Blowout.
Background technology
Horizontal well top uncoupling type two envelope single deck tape-recorder fracturing technology has become the main pressure break mode of Daqing oil field horizontal well, but due to technique shortage Technics of Prevention of Well Blowout, oil pipe liquid is gushed and caused site operation difficulty, and can cause a large amount of ground pollutions.The problem that horizontal well two envelope single deck tape-recorder Technics of Prevention of Well Blowout causes because liquid is gushed when solving site operation greatly, the liquid simultaneously avoiding oil pipe ejection impacts to the pollution of well site environment and to the healthy of workman.
Summary of the invention
The object of this invention is to provide one and when staged fracturing of horizontal well, horizontal well two envelope single deck tape-recorder Technics of Prevention of Well Blowout of blowout prevention can be realized.
The present invention is by realizing with lower device: it is made up of sleeve pipe, oil pipe, blowout prevention valve, safety joint, centralizer, hydraulic anchor, K344 packer, pressure-guiding sand blower, guiding plug; Wherein blowout prevention valve, safety joint, centralizer, hydraulic anchor, K344 packer, centralizer, pressure-guiding sand blower, K344 packer is connected with oil pipe by screw thread successively with guiding plug, and above-mentioned technique is realized by following steps:
A, first by blowout prevention valve, safety joint, centralizer, hydraulic anchor, K344 packer, centralizer, pressure-guiding sand blower, K344 packer with guiding plug be connected with oil pipe by screw thread successively, under enter in sleeve pipe;
Secondly b, will enter under this device to pre-fractured interval, seated well head, then ground fluid injection, opens blowout prevention valve, and pressure-guiding sand blower produces chock pressure difference and makes K344 packer setting, realize the object separating oil layer section, fracturing fluid enters stratum through the sandblasting hole of pressure-guiding sand blower, presses off stratum;
Reacting cycle well-flushing after the complete interval of c, pressure break, closes blowout prevention valve, above carries this device to next interval;
D, repetition a-c step realize the pressure break of each interval.
The present invention compared with the prior art tool has the following advantages:
The present invention is by the opening and closing of backwash pressure controlled circulation valve, blowout prevention in pressure break, backwash and oil pipe can be realized, multistage large sand amount pressure break can be realized, be applied in layer by layer and carry in fracturing technology and can significantly improve efficiency of construction, meet the requirement of safety, environmental protection simultaneously.
accompanying drawing illustrates:fig. 1 is application schematic diagram in scene of the present invention.
detailed description of the invention:below in conjunction with accompanying drawing, auspicious further stating is done to the present invention: this technique is by realizing with lower device: it is made up of 1-sleeve pipe, 2-oil pipe, 3-blowout prevention valve, 4-safety joint, 5-centralizer, 6-hydraulic anchor, 7-K344 packer, 8-pressure-guiding sand blower, 9-guiding plug; Wherein blowout prevention valve 3, safety joint 4, centralizer 5, hydraulic anchor 6, K344 packer 7, centralizer 5, pressure-guiding sand blower 8, K344 packer 7 are connected with oil pipe 2 by screw thread successively with guiding plug 9, and above-mentioned technique is realized by following steps:
A, first by blowout prevention valve 3, safety joint 4, centralizer 5, hydraulic anchor 6, K344 packer 7, centralizer 5, pressure-guiding sand blower 8, K344 packer 7 and guiding plug 9 be connected with oil pipe 2 by screw thread successively, under enter in sleeve pipe 1;
Secondly b, will enter under this device to pre-fractured interval, seated well head, then ground fluid injection, opens blowout prevention valve 3, and pressure-guiding sand blower 8 produces chock pressure difference makes K344 packer 7 set, realize the object separating oil layer section, fracturing fluid enters stratum through the sandblasting hole of pressure-guiding sand blower 8, presses off stratum;
Reacting cycle well-flushing after the complete interval of c, pressure break, closes blowout prevention valve 3, above carries this device to next interval;
D, repetition a-c step 3 time, realize pressure break four layers.
Claims (1)
1. horizontal well two envelope single deck tape-recorder Technics of Prevention of Well Blowout, this technique is by realizing with lower device: it is made up of sleeve pipe (1), oil pipe (2), blowout prevention valve (3), safety joint (4), centralizer (5), hydraulic anchor (6), K344 packer (7), pressure-guiding sand blower (8), guiding plug (9); Wherein blowout prevention valve (3), safety joint (4), centralizer (5), hydraulic anchor (6), K344 packer (7), centralizer (5), pressure-guiding sand blower (8), K344 packer (7) is connected with oil pipe (2) by screw thread successively with guiding plug (9), it is characterized in that: above-mentioned technique is realized by following steps:
A, first by blowout prevention valve (3), safety joint (4), centralizer (5), hydraulic anchor (6), K344 packer (7), centralizer (5), pressure-guiding sand blower (8), K344 packer (7) with guiding plug (9) be connected with oil pipe (2) by screw thread successively, under enter in sleeve pipe (1);
B, secondly, to enter under this device to pre-fractured interval, seated well head, then ground fluid injection, open blowout prevention valve (3), pressure-guiding sand blower (8) produces chock pressure difference makes K344 packer (7) set, and realizes the object separating oil layer section, fracturing fluid enters stratum through the sandblasting hole of pressure-guiding sand blower (8), presses off stratum;
Reacting cycle well-flushing after the complete interval of c, pressure break, closes blowout prevention valve (3), above carries this device to next interval;
D, repetition a-c step realize the pressure break of each interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510611736.7A CN105221094A (en) | 2015-09-23 | 2015-09-23 | Horizontal well double-sealing single-clamp blowout prevention process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510611736.7A CN105221094A (en) | 2015-09-23 | 2015-09-23 | Horizontal well double-sealing single-clamp blowout prevention process |
Publications (1)
| Publication Number | Publication Date |
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| CN105221094A true CN105221094A (en) | 2016-01-06 |
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| CN201510611736.7A Pending CN105221094A (en) | 2015-09-23 | 2015-09-23 | Horizontal well double-sealing single-clamp blowout prevention process |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863594A (en) * | 2016-05-05 | 2016-08-17 | 中国石油集团渤海钻探工程有限公司 | High temperature and high pressure step-by-step packing and unpacking multi-stage fracturing tubular column and application method thereof |
| CN109958422A (en) * | 2019-04-19 | 2019-07-02 | 中国石油天然气股份有限公司 | Blowout prevention and anti-sticking process suitable for large-displacement pressure drive |
| CN110671058A (en) * | 2019-09-10 | 2020-01-10 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Double-sealing single-clamping process pipe column of old horizontal well and method for realizing large-discharge transformation |
| CN110965978A (en) * | 2020-01-03 | 2020-04-07 | 中国石油天然气股份有限公司 | Horizontal well repeated fracturing tool and horizontal well repeated fracturing process method |
| CN112031731A (en) * | 2020-09-17 | 2020-12-04 | 中国石油天然气股份有限公司 | Repeated fracturing process method for longitudinal seam horizontal well |
| CN115749712A (en) * | 2021-12-30 | 2023-03-07 | 中国石油天然气集团有限公司 | Double-seal single-clamp under-pressure dragging fracturing method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060000620A1 (en) * | 2004-06-30 | 2006-01-05 | Brendon Hamilton | Isolation tool |
| CN101338663A (en) * | 2008-08-07 | 2009-01-07 | 大庆油田有限责任公司 | Horizontal well mechanical staged fracturing blocking-proof process pipe column |
| WO2010089558A3 (en) * | 2009-02-06 | 2010-10-28 | Halliburton Energy Services, Inc. | Apparatus and method for treating zones in a wellbore |
| CN202250014U (en) * | 2011-10-08 | 2012-05-30 | 华鼎鸿基石油工程技术(北京)有限公司 | Dual-packing single-clamping staged fracturing tool |
| CN203394497U (en) * | 2013-08-02 | 2014-01-15 | 中国石油天然气股份有限公司 | Hydraulic perforation oil casing pressure integrated separate-layer fracturing string |
| CN204082116U (en) * | 2014-08-26 | 2015-01-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Oil well horizontal well oil jacket is with note formula two envelope single deck tape-recorder volume fracturing tubing string |
| CN104314546A (en) * | 2014-09-23 | 2015-01-28 | 中国石油天然气股份有限公司 | Staged fracturing well completion pipe string in horizontal well casing and staged fracturing process |
| CN204571928U (en) * | 2015-05-05 | 2015-08-19 | 中国石油天然气股份有限公司 | Blowout prevention valve |
-
2015
- 2015-09-23 CN CN201510611736.7A patent/CN105221094A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060000620A1 (en) * | 2004-06-30 | 2006-01-05 | Brendon Hamilton | Isolation tool |
| CN101338663A (en) * | 2008-08-07 | 2009-01-07 | 大庆油田有限责任公司 | Horizontal well mechanical staged fracturing blocking-proof process pipe column |
| WO2010089558A3 (en) * | 2009-02-06 | 2010-10-28 | Halliburton Energy Services, Inc. | Apparatus and method for treating zones in a wellbore |
| CN202250014U (en) * | 2011-10-08 | 2012-05-30 | 华鼎鸿基石油工程技术(北京)有限公司 | Dual-packing single-clamping staged fracturing tool |
| CN203394497U (en) * | 2013-08-02 | 2014-01-15 | 中国石油天然气股份有限公司 | Hydraulic perforation oil casing pressure integrated separate-layer fracturing string |
| CN204082116U (en) * | 2014-08-26 | 2015-01-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Oil well horizontal well oil jacket is with note formula two envelope single deck tape-recorder volume fracturing tubing string |
| CN104314546A (en) * | 2014-09-23 | 2015-01-28 | 中国石油天然气股份有限公司 | Staged fracturing well completion pipe string in horizontal well casing and staged fracturing process |
| CN204571928U (en) * | 2015-05-05 | 2015-08-19 | 中国石油天然气股份有限公司 | Blowout prevention valve |
Non-Patent Citations (1)
| Title |
|---|
| 张春辉 等: "ZF1-P2井双封单卡多段压裂现场应用", 《海洋石油》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863594A (en) * | 2016-05-05 | 2016-08-17 | 中国石油集团渤海钻探工程有限公司 | High temperature and high pressure step-by-step packing and unpacking multi-stage fracturing tubular column and application method thereof |
| CN105863594B (en) * | 2016-05-05 | 2019-01-08 | 中国石油集团渤海钻探工程有限公司 | A kind of high temperature and pressure stepped setting deblocking multistage fracturing tubing string and its application method |
| CN109958422A (en) * | 2019-04-19 | 2019-07-02 | 中国石油天然气股份有限公司 | Blowout prevention and anti-sticking process suitable for large-displacement pressure drive |
| CN110671058A (en) * | 2019-09-10 | 2020-01-10 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Double-sealing single-clamping process pipe column of old horizontal well and method for realizing large-discharge transformation |
| CN110965978A (en) * | 2020-01-03 | 2020-04-07 | 中国石油天然气股份有限公司 | Horizontal well repeated fracturing tool and horizontal well repeated fracturing process method |
| CN112031731A (en) * | 2020-09-17 | 2020-12-04 | 中国石油天然气股份有限公司 | Repeated fracturing process method for longitudinal seam horizontal well |
| CN115749712A (en) * | 2021-12-30 | 2023-03-07 | 中国石油天然气集团有限公司 | Double-seal single-clamp under-pressure dragging fracturing method |
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Application publication date: 20160106 |